Responding to Taj's question about Olive-sided Flycatcher dates...
Yes, October 4 definitely does seem like a late date to be seeing this
migrant. Most of my experience with this species is from Ithaca, NY,
where it is typically seen as a fall migrant in late August or early
September. (I don't remember any reports there in the past 7 years after
mid-September.) Checking Murin and Pfeiffer's excellent "Birdwatching in
Vermont," I found a similar picture for Vermont for this species. They
list Olive-sided as very uncommon in the state through mid-September, and
then rare during the third week of the month.
The recent post about phoebes is an interesting juxtaposition to the
Olive-sided situation. All other things being equal, one might expect the
larger Olive-sided Flycatcher to be the first flycatcher to arrive in
northern latitudes in the spring and depart in the fall, due to body
size/thermoregulation issues. Instead, it is in fact the smaller Eastern
Phoebe that arrives earliest and leaves latest. And, of course, all other
things aren't equal--most Olive-sided Flycatchers winter in South America,
while phoebes can be found wintering just a short ways to our south, in
the the Southeastern U.S.
Subject: Olive-Sided Flycatcher in Putney
From: Taj/Julie <jtamler AT MYWAY.COM>
Date: Tue, 5 Oct 2004 16:05:16 -0400
Yesterday October 4, an Olive-sided Flycatcher hung around my house and
hunted insects for about half an hour. It gave me an awesome view. Isn't
it kind of late in the year to still be seeing them? Taj Schottland